fuel system advice for NA setup...
Thread Starter
Joined: Sep 2003
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From: Richmond, VA
fuel system advice for NA setup... I will be adding stage 3 LS1 heads milled .10 with a TSP 233/239 cam with stock block and I have a stock fuel system right now. I never thought about changing it until recently, is it necessary? What are the stock system limitations? What would be the best combo for my system? I don't want an in-line pump, I'd rather do an in-tank setup. I'm assuming if I change the pump, I will have to change the injectors, correct?
Thanks
Thanks
Thread Starter
Joined: Sep 2003
Posts: 1,199
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From: Richmond, VA
Thanks for the reply, I have a buddy that wants to sell me his injectors, I think they are either 30# or 36#, I can't remember, do you think the SVO 30#er's should be ok? Where can I buy the racetronix kit?
Thread Starter
Joined: Sep 2003
Posts: 1,199
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From: Richmond, VA
I just talked to my buddy and he has 38#er's off his SC Hawk, those should work for me right? Also, should I look into new fuel rails? I was looking into Speed Inc.'s system with the external regulator, would they aid the rest of the fuel system? Thanks for the help JRP...
to find out what injectors you should need. Say you are hoping for 600 hp. Horsepower X BSFC (constant of .5)= fuel required. IE 600 hp X .5 =300 lbs fuel per hr. now you need to figure out what lb injectors to use. Lbs fuel hr / 8 injectors.=37.5 @100% duty cycle. you want to use maximum of 80% duty so you need to take the 100% rating of 37.5 and / by .8 or 80% and find that you should use 46.87 lbs/hr. injectors. you can use this to apply to any hp rating.
Thread Starter
Joined: Sep 2003
Posts: 1,199
Likes: 0
From: Richmond, VA
sweet, thanks 72ChevelleConv.LS1, well I used the formula and it's saying that I need 42# injectors. Does this sound right? That seems a little much for a H/C car?? Someone check my math, 550(FWHP)X.5=275, 275/8=34.375, 34.375/.8=42.96. did I do it right?
Thanks
Thanks
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Originally Posted by 72ChevelleConv.LS1
to find out what injectors you should need. Say you are hoping for 600 hp. Horsepower X BSFC (constant of .5)= fuel required. IE 600 hp X .5 =300 lbs fuel per hr. now you need to figure out what lb injectors to use. Lbs fuel hr / 8 injectors.=37.5 @100% duty cycle. you want to use maximum of 80% duty so you need to take the 100% rating of 37.5 and / by .8 or 80% and find that you should use 46.87 lbs/hr. injectors. you can use this to apply to any hp rating.
Mike
